REFLECTOR: Speed and Efficiency

Tue May 6 12:11:34 CDT 2014

I don't know much about Franklin engines... But, I do know that they come in an assortment
 of sizes and horse power ranges... Maybe you guys could be more specific with Franklin's....

Steve 

From: mikewatsspg at gmail.com
Date: Tue, 6 May 2014 12:48:57 -0400
To: reflector at tvbf.org
Subject: Re: REFLECTOR: Speed and Efficiency

I'm getting almost the same as Larry. 4 KIAS slower at 8000 ft which may be due
to VG's on canard and wings.

SE/RG Franklin/IVO
N104MW

On Tue, May 6, 2014 at 12:26 PM, Laurence Coen <lwcoen at hotmail.com> wrote:

Bill,

I got 180 KTAS in my SE/RG at a DA of 8000 ft, 2700 RPM WOT 12.2 GPH, solo and half fuel (level flight).  I don't fly that way when I'm going somewhere.  Near gross at 10,000 ft DA and 2600 RPM fuel flow drops to 9.8 GPH and KTAS to 174.

Larry Coen

N136LC Franklin/IVO

--------------------------------------------------

From: "Stockman, Bill" <bill.stockman at daytonaero.com>

Sent: Monday, May 05, 2014 7:09 PM

To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>

Subject: Re: REFLECTOR: Speed and Efficiency

Unless that SE-RG is pointing straight down, I have my doubts about 180 kts.

________________________________________

From: reflector-bounces at tvbf.org [reflector-bounces at tvbf.org] On Behalf Of Reiff Lorenz [Reiff at lorenz.com]

Sent: Monday, May 05, 2014 6:24 PM

To: reflector at tvbf.org

Subject: REFLECTOR: Speed and Efficiency

Recently, some performance stats were posted to the VOBA forum. I want to get everyone's input, so I'm re-posting it here.

Owners, please reply with details of your plane and what numbers you use for flight planning . . .

•         What model and engine are you flying? XL/SE? Fixed or RG? Engine?

•         What is your efficiency cruise KTAS, GPH, and altitude?

•         What is your speed cruise KTAS, GPH, and altitude?

(If you already posted your stats in the VOBA forum, you don't need to send them again. I have not finished compiling the results, so your numbers may not be listed below.)

Reiff

=============================

Here are the performance stats that John and Scott reported:

Aircraft

Engine

KTAS

GPH

Alt

SE-RG

Lycoming IO-360

180

10

Twin

Lycoming IO-320

170

12

Twin

Lycoming IO-320

180

14

Twin

Lycoming IO-360

215

20

Twin

Lycoming IO-360

195

16

TXL-RG

Continental TSIO-550-c

250

17.5

FL240

XL-RG

Continental IO-550

205

13.5

XL-RG

Lycoming IO-540 (300)

200

14.5

XL-RG

Lycoming IO-540 (260)

185

13

XL-RG

Lycoming IO-580 (315)

202

16

Are others in the community seeing similar performance

This isn’t a speed contest, it’s a reality check. Post your typical flight numbers and I’ll compile them into something we all can use.

Reiff Lorenz, Dayton, Ohio

Velocity XL-RG, 56% complete

Currently working on: Fitting glare shield, panel, and frame

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